If a polypeptide is 100 amino acids long, and could be made of any of the 20 amino acids in any order, what is the total number of possible variations for this polypetide?

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Quizplus · Accepted Answer

The total number of possible variations for a polypeptide 100 amino acids long, with 20 different amino acids available for each position, is calculated as $20^{100}$. This is because for each position in the polypeptide chain, there are 20 choices, and this choice is independent for each of the 100 positions.

If a Polypeptide Is 100 Amino Acids Long, and Could